ASTROSAT CZTI

Data Quality Report

Orbit 23283

Creation date: 2024-06-27T18:52:18.336670
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C05_005T01_9000003440_23283cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23283cztM0_level2_quad_clean.evt
Size (bytes)697,694,400142,637,760
Size665.4 MB 136.0 MB
Events in quadrant A4,815,700905,223
Events in quadrant B4,904,907923,820
Events in quadrant C5,027,328884,542
Events in quadrant D5,661,132870,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216712
B0217632
C0221682
D0245482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10628710.668047%
B10629960.903189%
C106291921.806379%
D106291891.778154%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 11603 10629 0 0 0.00% 0.00%
B 11604 10630 0 0 0.00% 0.00%
C 11604 10631 38 38 0.33% 0.36%
D 11604 10631 113 113 0.97% 1.06%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 16341 60.29 1245 1216 250.9
A 6 16 11899 42.58 1245 1216 250.9
A 3 137 11409 40.63 1245 1216 250.9
B 12 111 29730 120.45 1243 1212 236.8
B 11 111 26272 105.85 1243 1212 236.8
B 14 111 22988 91.98 1243 1212 236.8
C 14 238 190854 681.76 1193 1199 278.2
C 10 9 151332 539.69 1193 1199 278.2
C 0 207 15121 50.05 1193 1199 278.2
D 1 52 481803 1623.58 1209 1172 296.0
D 12 233 239262 804.27 1209 1172 296.0
D 1 239 105825 353.52 1209 1172 296.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter